Ryuichi Ugajin

552 total citations
55 papers, 472 citations indexed

About

Ryuichi Ugajin is a scholar working on Atomic and Molecular Physics, and Optics, Condensed Matter Physics and Electrical and Electronic Engineering. According to data from OpenAlex, Ryuichi Ugajin has authored 55 papers receiving a total of 472 indexed citations (citations by other indexed papers that have themselves been cited), including 44 papers in Atomic and Molecular Physics, and Optics, 21 papers in Condensed Matter Physics and 14 papers in Electrical and Electronic Engineering. Recurrent topics in Ryuichi Ugajin's work include Quantum and electron transport phenomena (36 papers), Semiconductor Quantum Structures and Devices (29 papers) and Theoretical and Computational Physics (13 papers). Ryuichi Ugajin is often cited by papers focused on Quantum and electron transport phenomena (36 papers), Semiconductor Quantum Structures and Devices (29 papers) and Theoretical and Computational Physics (13 papers). Ryuichi Ugajin collaborates with scholars based in Japan, Taiwan and United States. Ryuichi Ugajin's co-authors include Akira Ishibashi, T. Suzuki, Yoshifumi Mori, Kazumasa Nomoto, Shuzo Hirata, Coe Ishimoto, Satoshi Watanabe, Masato Ohnishi and Yoshito Watanabe and has published in prestigious journals such as Physical Review Letters, Physical review. B, Condensed matter and Applied Physics Letters.

In The Last Decade

Ryuichi Ugajin

52 papers receiving 449 citations

Peers

Ryuichi Ugajin

AMPO

CMP

EEE

SNP

CTM

Wei‐Kuo Chen Taiwan

Tota Nakamura Japan

Jing-Min Hou China

O. Voskoboynikov Taiwan

F. Baboux France

Christophe Chatelain France

Eduardo Lage Portugal

Ulrich Wulf Germany

A. L. Kuzemsky Russia

Jaime E. Santos Portugal

Wei‐Kuo Chen Taiwan

Ryuichi Ugajin

149 ×0.4

AMPO

366 ×2.1

CMP

106 ×0.8

EEE

20 ×0.2

SNP

48 ×0.8

CTM

Citations per year, relative to Ryuichi Ugajin Ryuichi Ugajin (= 1×) peers Wei‐Kuo Chen

Countries citing papers authored by Ryuichi Ugajin

Since Specialization

Citations

This map shows the geographic impact of Ryuichi Ugajin's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Ryuichi Ugajin with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Ryuichi Ugajin more than expected).

Fields of papers citing papers by Ryuichi Ugajin

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Ryuichi Ugajin. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Ryuichi Ugajin. The network helps show where Ryuichi Ugajin may publish in the future.

Co-authorship network of co-authors of Ryuichi Ugajin

This figure shows the co-authorship network connecting the top 25 collaborators of Ryuichi Ugajin. A scholar is included among the top collaborators of Ryuichi Ugajin based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Ryuichi Ugajin. Ryuichi Ugajin is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Ugajin, Ryuichi. (2003). Statistical crossover characterization of the heterotic localized-extended transition. Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics. 68(1). 16219–16219. 2 indexed citations

Ugajin, Ryuichi. (2003). Critical helix of hierarchical structures. Physica A Statistical Mechanics and its Applications. 324(3-4). 551–567.

Ugajin, Ryuichi. (2003). Crossover Characterization of the Spectral Statistics in Fractal-Based Complexes with Random Magnetic Fields. International Journal of Modern Physics B. 17(13). 2623–2631. 2 indexed citations

Ugajin, Ryuichi. (2003). Quantum-chaos control by an applied electric field. Physics Letters A. 316(5). 336–341. 2 indexed citations

Ugajin, Ryuichi. (2003). Biomorphic Materials Endeavor: Physics in Helix‐Based Complexes. ChemInform. 34(41). 1 indexed citations

Ugajin, Ryuichi. (2002). Heterotic phase in ferromagnetism of a nerve-cell-like fractal-based complex. Applied Physics Letters. 80(21). 4021–4023. 3 indexed citations

Ugajin, Ryuichi. (2002). Phase control in multiply looped rings. Physica A Statistical Mechanics and its Applications. 308(1-4). 273–291. 3 indexed citations

Ugajin, Ryuichi. (2001). Anderson Transition in a Multiply-Twisted Helix. Journal of Nanoscience and Nanotechnology. 1(2). 227–235. 7 indexed citations

Ugajin, Ryuichi. (2001). Self-organized network of fractal-shaped components coupled through statistical interaction. Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics. 64(3). 31103–31103. 5 indexed citations

10.

Ugajin, Ryuichi, et al.. (2001). FERROMAGNETIC AND MOTT TRANSITIONS MODULATED BY VARYING FRACTAL DIMENSIONS IN FRACTAL–SHAPED NANOSTRUCTURES. International Journal of Modern Physics B. 15(14). 2025–2044. 4 indexed citations

11.

Ugajin, Ryuichi. (1998). Quasiresonance between three-electron states in coupled quantum dots. Physica B Condensed Matter. 245(4). 311–316. 1 indexed citations

12.

Ugajin, Ryuichi. (1997). Hubbard chain with confinement: A model analysis of a finite chain of quantum dots. Physica B Condensed Matter. 229(2). 146–152. 9 indexed citations

13.

Ugajin, Ryuichi. (1997). Far-infrared absorption spectra of three electrons in a square-well quantum dot. Surface Science. 375(2-3). 403–410. 3 indexed citations

14.

Ugajin, Ryuichi. (1997). Off-Resonance Effect on Electron Tunneling through a Hubbard Gap. Journal of the Physical Society of Japan. 66(2). 425–429. 7 indexed citations

15.

Ugajin, Ryuichi. (1996). Electron-Density Fluctuation in a Mott Transition Induced by an External Electric Field. Journal of the Physical Society of Japan. 65(12). 3952–3956. 7 indexed citations

16.

Ugajin, Ryuichi. (1995). Far-infrared absorption in coupled quantum dots. Physical review. B, Condensed matter. 51(16). 11136–11139. 8 indexed citations

17.

Ugajin, Ryuichi, Akira Ishibashi, & Yoshifumi Mori. (1994). Advanced fabrication techniques of three-dimensional microstructures for future electronic devices. Journal of Vacuum Science & Technology B Microelectronics and Nanometer Structures Processing Measurement and Phenomena. 12(6). 3160–3165. 2 indexed citations

18.

Ugajin, Ryuichi. (1994). Mott metal-insulator transition driven by an external electric field in coupled quantum dot arrays and its application to field effect devices. Journal of Applied Physics. 76(5). 2833–2836. 28 indexed citations

19.

Ugajin, Ryuichi, et al.. (1993). A proposal of a vacuum micro quantum interference transistor. Journal of Applied Physics. 73(1). 1–7. 48 indexed citations

20.

Nomoto, Kazumasa, et al.. (1993). Novel logic device using coupled quantum dots. Electronics Letters. 29(15). 1380–1381. 5 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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